organic compounds
(E)-1-([1,1′-Biphenyl]-4-yl)-3-(2-methylphenyl)prop-2-en-1-one
aDepartment of Chemistry, Annamalai University, Annamalai Nagar 608 002, Tamilnadu, India, bDepartment of Physics, Kunthavai Naachiar Government Arts College (W) (Autonomous), Thanjavur 613 007, Tamilnadu, India, and cPostgraduate Research Department of Physics, Rajah Serfoji Government College (Autonomous), Thanjavur 613 005, Tamilnadu, India
*Correspondence e-mail: thiruvalluvar.a@gmail.com
In the title molecule, C22H18O, the o-tolyl ring is connected through a conjugated double bond. The molecule adopts an E conformation and the C—C=C—C torsion angle is 178.77 (13)°. The overall conformation may be described by the values of dihedral angles between the different planes. The terminal rings are twisted by an angle of 54.75 (8)°, while the biphenyl part is not planar, the dihedral angle between the planes of the rings being 40.65 (8)°. The dihedral angle between the benzene rings is 14.10 (7)°. There are three weak C—H⋯π interactions found in the No classic hydrogen bonds are observed.
Keywords: crystal structure.
CCDC reference: 977614
Related literature
For the bioactivity of et al. (1999). For biological applications of see: Opletalova (2000); Opletalova & Sedivy (1999). For as non-linear optical materials, see: Fichou et al. (1988); Goto et al. (1991). For further applications of see: Sarojini et al. (2006). For the crystal structures of related compounds, see: Betz et al. (2011a,b). For bond-length data, see: Allen et al. (1987).
see: DimmockExperimental
Crystal data
|
Data collection: APEX2 (Bruker, 2004); cell APEX2 and SAINT (Bruker, 2004); data reduction: SAINT and XPREP (Bruker, 2004); program(s) used to solve structure: SHELXS2013 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and PLATON (Spek, 2009); software used to prepare material for publication: SHELXL2014 and PLATON (Spek, 2009).
Supporting information
CCDC reference: 977614
https://doi.org/10.1107/S1600536814014317/jj2188sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536814014317/jj2188Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536814014317/jj2188Isup3.cdx
Supporting information file. DOI: https://doi.org/10.1107/S1600536814014317/jj2188Isup4.cml
4-Acetylbiphenyl (1.06 g, 10 mmol) and 2-methylbenzaldehyde (1.06 g, 10 mmol) in ethanol (25 ml) is mixed in the presence of NaOH (10 ml 30%). The reaction mixture was stirred for 6 h. Then the contents of the flask were poured into ice cold water (250 ml) and left for 12 h. The solid obtained was filtered and recrystallized for three to four times with ethanol. The pale-yellow single crystals of the title compound used for X-ray diffraction studies were grown by slow evaporation of acetone. Yield: 1.48 g (70%).
All H-atoms were positioned geometrically and allowed to ride on their parent atoms, with C—H = 0.93 Å (aromatic), 0.96 Å (methyl group), with Uiso(H) = 1.2 or 1.5Ueq(C); for aromatic and methyl group.
Bioactivities of
were reported by Dimmock et al., (1999). The antibacterial, fungistatic and fungicidal properties of these compounds have also been reviewed (Opletalova et al. 2000, 1999). In addition with appropriate substituents, are a class of non-linear optical materials (Fichou et al. 1988, Goto et al. 1991). Recently, it has been noted that among many organic second harmonic generation, chalcone derivatives have excellent blue light transmittance and good cyrstallizability (Sarojini et al. 2006). The related compounds whose structures have been solved by X-ray are (2E)-1-(4,4''-Difluoro-5'-methoxy-1,1':3',1''-terphenyl-4'-yl)- 3-(4-fluorophenyl)prop-2-en-1-one (Betz et al. 2011a) and (E)-1-(4,4''-Difluoro-5'-methoxy-1,1':3',1''-terphenyl-4' -yl)-3-(4-nitrophenyl)prop-2-en-1-one (Betz et al. 2011b).In the title molecule (Fig. 1), C22H18O, the o-tolyl ring is connected through a conjugated double bond. The molecule adopts an E configuration and the C7—C8—C9—C10 torsion angle is 178.77 (13)°. Further, the torsion angle [C8—C9—C10—C11 = -164.91 (13)°] shows that the prop-2-en-1-one unit is not planar. The overall conformation of the compound may be described by the values of dihedral angles between the different planes. The terminal rings (C2—C7) and (C17—C22) are twisted by an angle of 54.75 (8)°, while the biphenyl part is not planar, the dihedral angle between the planes of the rings (C11—C16) and (C17—C22) being 40.65 (8)°. The dihedral angle between the benzene rings (C2—C7) and (C11—C16) is 14.10 (7)°.
There are three weak C1—H1C···π, C5—H5···π and C21—H21···π interactions involving the central benzene ring (C11—C16), the terminal phenyl ring (C17—C22) and the terminal benzene ring (C2—C7), respectively, are found in the The Car—Csp3, Car—Car and C═O bond lengths in (I) are within their normal ranges (Allen et al., 1987). No classic hydrogen bonds are observed.
For the bioactivity of
see: Dimmock et al. (1999). For biological applications of see: Opletalova (2000); Opletalova & Sedivy (1999). For as non-linear optical materials, see: Fichou et al. (1988); Goto et al. (1991). For further applications of see: Sarojini et al. (2006). For the crystal structures of related compounds, see: Betz et al. (2011a,b). For bond-length data, see: Allen et al. (1987).Data collection: APEX2 (Bruker, 2004); cell
APEX2 and SAINT (Bruker, 2004); data reduction: SAINT and XPREP (Bruker, 2004); program(s) used to solve structure: SHELXS2013 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and PLATON (Spek, 2009); software used to prepare material for publication: SHELXL2014 (Sheldrick, 2008) and PLATON (Spek, 2009).Fig. 1. The molecular structure of the title compound, with displacement ellipsoids drawn at the 30% probability level. H atoms are shown as small spheres of arbitrary radius. | |
Fig. 2. The partial packing of the title compound, showing the three weak C—H···π interactions. |
C22H18O | Z = 2 |
Mr = 298.36 | F(000) = 316 |
Triclinic, P1 | Dx = 1.224 Mg m−3 |
Hall symbol: -P 1 | Melting point: 393 K |
a = 7.6396 (3) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 9.9106 (4) Å | Cell parameters from 7102 reflections |
c = 11.9263 (4) Å | θ = 2.8–26.3° |
α = 103.166 (2)° | µ = 0.07 mm−1 |
β = 104.713 (2)° | T = 273 K |
γ = 103.308 (2)° | Block, pale yellow |
V = 809.66 (6) Å3 | 0.40 × 0.35 × 0.30 mm |
Bruker Kappa APEXII CCD diffractometer | 4534 independent reflections |
Radiation source: fine-focus sealed tube | 3291 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
ω and φ scan | θmax = 29.6°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −10→10 |
Tmin = 0.908, Tmax = 1.000 | k = −13→13 |
18636 measured reflections | l = −16→16 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.048 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.151 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.073P)2 + 0.1155P] where P = (Fo2 + 2Fc2)/3 |
4534 reflections | (Δ/σ)max = 0.001 |
209 parameters | Δρmax = 0.23 e Å−3 |
0 restraints | Δρmin = −0.17 e Å−3 |
C22H18O | γ = 103.308 (2)° |
Mr = 298.36 | V = 809.66 (6) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.6396 (3) Å | Mo Kα radiation |
b = 9.9106 (4) Å | µ = 0.07 mm−1 |
c = 11.9263 (4) Å | T = 273 K |
α = 103.166 (2)° | 0.40 × 0.35 × 0.30 mm |
β = 104.713 (2)° |
Bruker Kappa APEXII CCD diffractometer | 4534 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 3291 reflections with I > 2σ(I) |
Tmin = 0.908, Tmax = 1.000 | Rint = 0.024 |
18636 measured reflections |
R[F2 > 2σ(F2)] = 0.048 | 0 restraints |
wR(F2) = 0.151 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.23 e Å−3 |
4534 reflections | Δρmin = −0.17 e Å−3 |
209 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
x | y | z | Uiso*/Ueq | ||
O1 | 0.37261 (17) | 0.60727 (11) | 0.09681 (9) | 0.0666 (4) | |
C1 | 0.1424 (2) | 0.25545 (16) | −0.31150 (12) | 0.0598 (5) | |
C2 | 0.02836 (17) | 0.14897 (13) | −0.26587 (10) | 0.0413 (3) | |
C3 | −0.08815 (19) | 0.01392 (14) | −0.34508 (11) | 0.0489 (4) | |
C4 | −0.1977 (2) | −0.08585 (15) | −0.30810 (13) | 0.0555 (4) | |
C5 | −0.1963 (2) | −0.05199 (16) | −0.18929 (14) | 0.0594 (5) | |
C6 | −0.0836 (2) | 0.08192 (15) | −0.10901 (12) | 0.0513 (4) | |
C7 | 0.02996 (17) | 0.18386 (13) | −0.14437 (10) | 0.0396 (3) | |
C8 | 0.14997 (19) | 0.32479 (13) | −0.05697 (10) | 0.0447 (3) | |
C9 | 0.13129 (18) | 0.38670 (14) | 0.04796 (11) | 0.0477 (4) | |
C10 | 0.26312 (18) | 0.52846 (14) | 0.13063 (10) | 0.0448 (4) | |
C11 | 0.26370 (17) | 0.57385 (13) | 0.25891 (10) | 0.0404 (3) | |
C12 | 0.1919 (2) | 0.47482 (14) | 0.31431 (11) | 0.0478 (4) | |
C13 | 0.20814 (19) | 0.51956 (14) | 0.43612 (11) | 0.0476 (4) | |
C14 | 0.29252 (17) | 0.66487 (13) | 0.50571 (10) | 0.0397 (3) | |
C15 | 0.35955 (18) | 0.76420 (13) | 0.44861 (10) | 0.0429 (3) | |
C16 | 0.34808 (18) | 0.71934 (13) | 0.32782 (10) | 0.0427 (3) | |
C17 | 0.30998 (17) | 0.71263 (14) | 0.63651 (10) | 0.0422 (3) | |
C18 | 0.35892 (19) | 0.62864 (15) | 0.71095 (11) | 0.0481 (4) | |
C19 | 0.3769 (2) | 0.67267 (17) | 0.83319 (12) | 0.0560 (5) | |
C20 | 0.3468 (2) | 0.80073 (19) | 0.88272 (12) | 0.0636 (5) | |
C21 | 0.2975 (3) | 0.8849 (2) | 0.81035 (13) | 0.0695 (6) | |
C22 | 0.2805 (2) | 0.84196 (17) | 0.68813 (12) | 0.0574 (5) | |
H1A | 0.12155 | 0.21253 | −0.39637 | 0.0897* | |
H1B | 0.27494 | 0.28020 | −0.26678 | 0.0897* | |
H1C | 0.10373 | 0.34179 | −0.30056 | 0.0897* | |
H3 | −0.09204 | −0.00968 | −0.42594 | 0.0587* | |
H4 | −0.27269 | −0.17613 | −0.36309 | 0.0666* | |
H5 | −0.27074 | −0.11885 | −0.16353 | 0.0712* | |
H6 | −0.08350 | 0.10469 | −0.02891 | 0.0615* | |
H8 | 0.24937 | 0.37590 | −0.07733 | 0.0536* | |
H9 | 0.03187 | 0.33939 | 0.07040 | 0.0573* | |
H12 | 0.13232 | 0.37751 | 0.26899 | 0.0574* | |
H13 | 0.16190 | 0.45138 | 0.47211 | 0.0572* | |
H15 | 0.41293 | 0.86238 | 0.49267 | 0.0514* | |
H16 | 0.39719 | 0.78701 | 0.29226 | 0.0512* | |
H18 | 0.37988 | 0.54158 | 0.67813 | 0.0576* | |
H19 | 0.40953 | 0.61518 | 0.88177 | 0.0672* | |
H20 | 0.35956 | 0.83064 | 0.96495 | 0.0763* | |
H21 | 0.27551 | 0.97129 | 0.84371 | 0.0834* | |
H22 | 0.24891 | 0.90049 | 0.64033 | 0.0688* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0822 (8) | 0.0610 (6) | 0.0424 (5) | −0.0025 (5) | 0.0263 (5) | 0.0071 (4) |
C1 | 0.0701 (10) | 0.0586 (8) | 0.0426 (7) | 0.0047 (7) | 0.0249 (6) | 0.0080 (6) |
C2 | 0.0422 (6) | 0.0426 (6) | 0.0362 (5) | 0.0136 (5) | 0.0117 (4) | 0.0071 (4) |
C3 | 0.0517 (8) | 0.0478 (7) | 0.0379 (6) | 0.0152 (6) | 0.0086 (5) | 0.0020 (5) |
C4 | 0.0492 (8) | 0.0431 (7) | 0.0561 (8) | 0.0065 (6) | 0.0045 (6) | 0.0030 (6) |
C5 | 0.0536 (8) | 0.0522 (8) | 0.0661 (9) | 0.0044 (6) | 0.0186 (7) | 0.0191 (7) |
C6 | 0.0555 (8) | 0.0524 (8) | 0.0445 (6) | 0.0119 (6) | 0.0196 (6) | 0.0130 (5) |
C7 | 0.0407 (6) | 0.0410 (6) | 0.0352 (5) | 0.0135 (5) | 0.0112 (4) | 0.0082 (4) |
C8 | 0.0502 (7) | 0.0439 (6) | 0.0354 (5) | 0.0097 (5) | 0.0137 (5) | 0.0084 (5) |
C9 | 0.0459 (7) | 0.0517 (7) | 0.0371 (6) | 0.0085 (6) | 0.0139 (5) | 0.0038 (5) |
C10 | 0.0481 (7) | 0.0484 (7) | 0.0341 (5) | 0.0138 (5) | 0.0123 (5) | 0.0075 (5) |
C11 | 0.0410 (6) | 0.0434 (6) | 0.0329 (5) | 0.0127 (5) | 0.0100 (4) | 0.0066 (4) |
C12 | 0.0564 (8) | 0.0383 (6) | 0.0404 (6) | 0.0067 (5) | 0.0159 (5) | 0.0040 (5) |
C13 | 0.0565 (8) | 0.0421 (7) | 0.0408 (6) | 0.0070 (6) | 0.0183 (5) | 0.0114 (5) |
C14 | 0.0398 (6) | 0.0430 (6) | 0.0340 (5) | 0.0128 (5) | 0.0108 (4) | 0.0083 (4) |
C15 | 0.0497 (7) | 0.0358 (6) | 0.0359 (5) | 0.0099 (5) | 0.0094 (5) | 0.0057 (4) |
C16 | 0.0482 (7) | 0.0406 (6) | 0.0362 (5) | 0.0100 (5) | 0.0116 (5) | 0.0120 (4) |
C17 | 0.0395 (6) | 0.0481 (7) | 0.0347 (5) | 0.0104 (5) | 0.0121 (4) | 0.0077 (5) |
C18 | 0.0505 (7) | 0.0489 (7) | 0.0420 (6) | 0.0085 (6) | 0.0166 (5) | 0.0136 (5) |
C19 | 0.0536 (8) | 0.0686 (9) | 0.0429 (7) | 0.0081 (7) | 0.0165 (6) | 0.0212 (6) |
C20 | 0.0582 (9) | 0.0913 (12) | 0.0376 (6) | 0.0204 (8) | 0.0194 (6) | 0.0108 (7) |
C21 | 0.0794 (11) | 0.0832 (11) | 0.0489 (8) | 0.0428 (9) | 0.0238 (7) | 0.0041 (7) |
C22 | 0.0673 (9) | 0.0667 (9) | 0.0428 (7) | 0.0353 (8) | 0.0169 (6) | 0.0116 (6) |
O1—C10 | 1.2192 (18) | C19—C20 | 1.369 (2) |
C1—C2 | 1.499 (2) | C20—C21 | 1.375 (3) |
C2—C3 | 1.3873 (18) | C21—C22 | 1.385 (2) |
C2—C7 | 1.4072 (16) | C1—H1A | 0.9600 |
C3—C4 | 1.370 (2) | C1—H1B | 0.9600 |
C4—C5 | 1.376 (2) | C1—H1C | 0.9600 |
C5—C6 | 1.377 (2) | C3—H3 | 0.9300 |
C6—C7 | 1.388 (2) | C4—H4 | 0.9300 |
C7—C8 | 1.4628 (17) | C5—H5 | 0.9300 |
C8—C9 | 1.3207 (17) | C6—H6 | 0.9300 |
C9—C10 | 1.4743 (19) | C8—H8 | 0.9300 |
C10—C11 | 1.4917 (16) | C9—H9 | 0.9300 |
C11—C12 | 1.3901 (19) | C12—H12 | 0.9300 |
C11—C16 | 1.3904 (18) | C13—H13 | 0.9300 |
C12—C13 | 1.3828 (17) | C15—H15 | 0.9300 |
C13—C14 | 1.3909 (18) | C16—H16 | 0.9300 |
C14—C15 | 1.3948 (18) | C18—H18 | 0.9300 |
C14—C17 | 1.4847 (16) | C19—H19 | 0.9300 |
C15—C16 | 1.3809 (16) | C20—H20 | 0.9300 |
C17—C18 | 1.3900 (19) | C21—H21 | 0.9300 |
C17—C22 | 1.384 (2) | C22—H22 | 0.9300 |
C18—C19 | 1.3840 (18) | ||
C1—C2—C3 | 120.06 (11) | C2—C1—H1C | 109.00 |
C1—C2—C7 | 121.73 (11) | H1A—C1—H1B | 109.00 |
C3—C2—C7 | 118.16 (12) | H1A—C1—H1C | 109.00 |
C2—C3—C4 | 122.16 (12) | H1B—C1—H1C | 109.00 |
C3—C4—C5 | 119.78 (14) | C2—C3—H3 | 119.00 |
C4—C5—C6 | 119.30 (15) | C4—C3—H3 | 119.00 |
C5—C6—C7 | 121.79 (13) | C3—C4—H4 | 120.00 |
C2—C7—C6 | 118.80 (12) | C5—C4—H4 | 120.00 |
C2—C7—C8 | 120.48 (12) | C4—C5—H5 | 120.00 |
C6—C7—C8 | 120.72 (11) | C6—C5—H5 | 120.00 |
C7—C8—C9 | 126.52 (13) | C5—C6—H6 | 119.00 |
C8—C9—C10 | 122.06 (13) | C7—C6—H6 | 119.00 |
O1—C10—C9 | 121.45 (11) | C7—C8—H8 | 117.00 |
O1—C10—C11 | 119.84 (12) | C9—C8—H8 | 117.00 |
C9—C10—C11 | 118.70 (12) | C8—C9—H9 | 119.00 |
C10—C11—C12 | 122.41 (11) | C10—C9—H9 | 119.00 |
C10—C11—C16 | 118.91 (11) | C11—C12—H12 | 120.00 |
C12—C11—C16 | 118.59 (11) | C13—C12—H12 | 120.00 |
C11—C12—C13 | 120.66 (12) | C12—C13—H13 | 119.00 |
C12—C13—C14 | 121.08 (13) | C14—C13—H13 | 119.00 |
C13—C14—C15 | 117.89 (11) | C14—C15—H15 | 119.00 |
C13—C14—C17 | 120.99 (12) | C16—C15—H15 | 119.00 |
C15—C14—C17 | 121.12 (11) | C11—C16—H16 | 120.00 |
C14—C15—C16 | 121.17 (12) | C15—C16—H16 | 120.00 |
C11—C16—C15 | 120.55 (12) | C17—C18—H18 | 120.00 |
C14—C17—C18 | 120.50 (12) | C19—C18—H18 | 120.00 |
C14—C17—C22 | 121.33 (12) | C18—C19—H19 | 120.00 |
C18—C17—C22 | 118.16 (11) | C20—C19—H19 | 120.00 |
C17—C18—C19 | 120.97 (14) | C19—C20—H20 | 120.00 |
C18—C19—C20 | 120.12 (14) | C21—C20—H20 | 120.00 |
C19—C20—C21 | 119.72 (13) | C20—C21—H21 | 120.00 |
C20—C21—C22 | 120.46 (17) | C22—C21—H21 | 120.00 |
C17—C22—C21 | 120.57 (15) | C17—C22—H22 | 120.00 |
C2—C1—H1A | 109.00 | C21—C22—H22 | 120.00 |
C2—C1—H1B | 109.00 | ||
C1—C2—C3—C4 | −178.74 (14) | C16—C11—C12—C13 | −1.5 (2) |
C7—C2—C3—C4 | −1.1 (2) | C10—C11—C16—C15 | −176.84 (13) |
C1—C2—C7—C6 | 177.97 (13) | C12—C11—C16—C15 | −0.2 (2) |
C1—C2—C7—C8 | −2.3 (2) | C11—C12—C13—C14 | 1.5 (2) |
C3—C2—C7—C6 | 0.4 (2) | C12—C13—C14—C15 | 0.3 (2) |
C3—C2—C7—C8 | −179.93 (14) | C12—C13—C14—C17 | −179.94 (14) |
C2—C3—C4—C5 | 1.1 (2) | C13—C14—C15—C16 | −2.0 (2) |
C3—C4—C5—C6 | −0.3 (2) | C17—C14—C15—C16 | 178.22 (13) |
C4—C5—C6—C7 | −0.4 (2) | C13—C14—C17—C18 | 40.6 (2) |
C5—C6—C7—C2 | 0.4 (2) | C13—C14—C17—C22 | −140.18 (15) |
C5—C6—C7—C8 | −179.34 (14) | C15—C14—C17—C18 | −139.63 (15) |
C2—C7—C8—C9 | 161.41 (14) | C15—C14—C17—C22 | 39.6 (2) |
C6—C7—C8—C9 | −18.9 (2) | C14—C15—C16—C11 | 2.0 (2) |
C7—C8—C9—C10 | 178.77 (13) | C14—C17—C18—C19 | 179.54 (14) |
C8—C9—C10—O1 | 13.9 (2) | C22—C17—C18—C19 | 0.3 (2) |
C8—C9—C10—C11 | −164.91 (13) | C14—C17—C22—C21 | −179.96 (16) |
O1—C10—C11—C12 | −158.73 (15) | C18—C17—C22—C21 | −0.7 (2) |
O1—C10—C11—C16 | 17.8 (2) | C17—C18—C19—C20 | −0.1 (2) |
C9—C10—C11—C12 | 20.1 (2) | C18—C19—C20—C21 | 0.4 (3) |
C9—C10—C11—C16 | −163.39 (13) | C19—C20—C21—C22 | −0.8 (3) |
C10—C11—C12—C13 | 175.01 (14) | C20—C21—C22—C17 | 1.0 (3) |
Cg1, Cg2 and Cg3 are the centroids of the C2–C7 methylbenzene, C11–C16 benzene and C17–C22 phenyl rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1C···Cg2i | 0.96 | 2.97 | 3.6689 (17) | 131 |
C5—H5···Cg3ii | 0.93 | 2.84 | 3.5126 (18) | 130 |
C21—H21···Cg1iii | 0.93 | 2.99 | 3.632 (2) | 127 |
Symmetry codes: (i) −x, −y+1, −z; (ii) x−1, y−1, z−1; (iii) x, y+1, z+1. |
Cg1, Cg2 and Cg3 are the centroids of the C2–C7 methylbenzene, C11–C16 benzene and C17–C22 phenyl rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1C···Cg2i | 0.96 | 2.97 | 3.6689 (17) | 131 |
C5—H5···Cg3ii | 0.93 | 2.84 | 3.5126 (18) | 130 |
C21—H21···Cg1iii | 0.93 | 2.99 | 3.632 (2) | 127 |
Symmetry codes: (i) −x, −y+1, −z; (ii) x−1, y−1, z−1; (iii) x, y+1, z+1. |
Acknowledgements
The authors are thankful to the Sophisticated Analytical Instrument Facility (SAIF), IITM, Chennai 600 036, Tamilnadu, India, for the single-crystal X-ray data.
References
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Bioactivities of chalcones were reported by Dimmock et al., (1999). The antibacterial, fungistatic and fungicidal properties of these compounds have also been reviewed (Opletalova et al. 2000, 1999). In addition with appropriate substituents, chalcones are a class of non-linear optical materials (Fichou et al. 1988, Goto et al. 1991). Recently, it has been noted that among many organic second harmonic generation, chalcone derivatives have excellent blue light transmittance and good cyrstallizability (Sarojini et al. 2006). The related compounds whose structures have been solved by X-ray are (2E)-1-(4,4''-Difluoro-5'-methoxy-1,1':3',1''-terphenyl-4'-yl)- 3-(4-fluorophenyl)prop-2-en-1-one (Betz et al. 2011a) and (E)-1-(4,4''-Difluoro-5'-methoxy-1,1':3',1''-terphenyl-4' -yl)-3-(4-nitrophenyl)prop-2-en-1-one (Betz et al. 2011b).
In the title molecule (Fig. 1), C22H18O, the o-tolyl ring is connected through a conjugated double bond. The molecule adopts an E configuration and the C7—C8—C9—C10 torsion angle is 178.77 (13)°. Further, the torsion angle [C8—C9—C10—C11 = -164.91 (13)°] shows that the prop-2-en-1-one unit is not planar. The overall conformation of the compound may be described by the values of dihedral angles between the different planes. The terminal rings (C2—C7) and (C17—C22) are twisted by an angle of 54.75 (8)°, while the biphenyl part is not planar, the dihedral angle between the planes of the rings (C11—C16) and (C17—C22) being 40.65 (8)°. The dihedral angle between the benzene rings (C2—C7) and (C11—C16) is 14.10 (7)°.
There are three weak C1—H1C···π, C5—H5···π and C21—H21···π interactions involving the central benzene ring (C11—C16), the terminal phenyl ring (C17—C22) and the terminal benzene ring (C2—C7), respectively, are found in the crystal structure. The Car—Csp3, Car—Car and C═O bond lengths in (I) are within their normal ranges (Allen et al., 1987). No classic hydrogen bonds are observed.